Paper machine



H. J. MEADER PAPER MACHINE Sept 21,1926. 1,600,689

Filed Oct. 30. 1919 2 Sheets-Sheet 1 I Sept. 21 192s. 1,606,689

H. J. MEADER PPPPPPPPPP NE Patented Sept. 21, 1926. p l i UNITED STATEATENT' oFFIcsE.

HENRY HEADER, OF UTICA, NEW YORK, ASSIGNOR TO THE FLINTKOTE COMYANY, OFBOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

PAPER MACHINE. Application filed October 30, 1919. Serial No. 334,458.

My .invention relates to an improvement is also provided with a falsebottom which in paper machines and refers more parcauses the stockentering through port 4 to ticularly to cylinder machines in which thepass down into the bottom of the vat under water is automatically drawnfrom the the cylinder and below the false bottom in 5 paper stock orpulp after the stock has been the direction indicated by arrows as seenin ca picked up from the vat by an endless wire Fig. 1. The stock iscaused to; become thormesh or screen which travels over a cyloughlycommingled in the vat and is in-a inder or drum before spreading stockinto perfetly homogeneous condition throughout sheets. where it comes incontact with the mesh Among its salient objects is to provide a thusproducing an even adhesion of paper 65 machine. in which the stock afterbeing to the mesh. Around the cylinder and thoroughly mixed in a vat isdrawn upon a adapted to have continuous motion is a wire mesh surfacedcylinder which is divided mesh 6, a portion of which is at all timeslongitudinally into compartments; to prosubmerged in the vat. The meshafter leavvide a machine in which said cylinder is roing the cylinderpasses over table rolls .7 7 tated past suction pipes arranged at one orand suction boxes 7 and thence to the conch both ends of the cylinderabove the surface rolls and thence back over rolls 9- which 1mof thestock in the vat, having mouth-pieces part tension and change directionas may or valve plates to register with the ends of be desired to thecylinder, the travel being the compartments, to complete the suction inthe direction indicated by arrows in Fig. chambers; to provide a machinewhich 1. A deckle 10 of the usual construction is draws the water fromthe paper stock that is mounted wholly within the vat. This prespreadupon the mesh surface of the cylvents the deckle from becoming injuredby inder by the use of suction pipes which draw any means outside of thevat and a shower the water from the compartments with the of water (notshown) keeps it clean and successive registering of the compartmentsfree from dirt. with the mouth-pieces of said suction pipes; In Fig. 2,is shown in more detail the conto provide a machine in which the dryingstruction of the cylinder. It has a series of process is materiallyshortened, and in genpartitions 11 radiating from the shaft 3 and eralto provide a machine of the character dividing cylinder longitudinallyinto pockreferred to. ets or compartments 12. These compart- Referenc-emay here be made by my Patments are air tight with exception of that entNo. 923,870, issued June 8, 1909, wherein part of each which is thecylinder facing ora wire mesh travels around and upon the mesh and theends. As the cylinder rotates cylinder and is carried over a series ofdrythese compartments, one or more at a time, 90

ing rolls and suction boxes to couch rolls and are capped by thestationary valve plates 13 thence to the presses. My present improveandcome into registration with said valve-- ment consists in theconstruction of the cylplate in such a manner that the ends of saidinder used in conjunction with the above compartments are closedairtight except for patent as explained above and is furthermeshcylinder surface and the pipes or out: 5 more and more particularlydescribed herelets 14 in which is formed a suction or parinafter. tialvacuum. The suction through pipes 14:

In the drawings and a similar outlet 15 on the opposite side, Fig. 1 isa side elevation partly in section, materially assists in drawing thewater 4 of as much of the machine as is necessary to from the stockwhich has adhered to the 0 show the application of my inventionthereoutside of the cylinder facing, thus hel ing to; to dry the sheetformed on the mesh. ut- Fig. 2 is a front elevation of the cylinder sideof the vat is a water reservoir 16 and with parts broken away, to showthe form leading from a cylindrical screen thereto of constructionwhereby the suction may be is a port 17 in the wall of the vat 1, and.applied to the ends of the cylinder. leading from the water reservoir 16is the In Fig. 1 of said drawings, 1 is a vat for discharge 18. It isunderstood that this are. containing the stock, 2 is a cylinder mountedrangement may be so constructed that it" in in said vat on a shaft 3.The vat has an inno Way interferes with the forming of a V let port 4for admission of the stock and it sheet on said mesh when there is nosuction applied. In such a case, the cylinder may be used in theordinary manner, although without the use of the suction-cylinder, avery much smaller quantity of paper can be produced with the same numberof drying rollers. A more expensive operation is nec-' essary to dry thesheet if the Water is only partially removed, and this mode of removinga greater part of the water materially accelerates the production of thepaper.

Although in the specification I have explained the suction drying devicein connection with my paper machine, it is not my intention to limit itsuse to this particular type of machine, for it can readily be seen thatthis suction arrangement may be adapted to any type of cylinder machineand attain like results.

I claim as my invention:

1. In apaper machine, the combination with a vat, and an inlet port forintroducing paper stock, of a rotatable cylinder aving a series ofpartitioned walls mounted therein, an endless Wire mesh adapted totravel around said cylinder and means for drawing Water from the clinder compartments above the surface 0t the paper stock in the vatprior to its leaving the cylinder.

In a paper machine, the combination With a vat having a false bottom andinlet port for introducing paper stock, of a rotattable cylinderlongitudinally partitioned into compartments, an endless Wire meshadapted to travel around said cylinder and a suction pipe and valveplate arranged above the surface of the paper stock in the vat to formsuction chambers of the cylinder compartments and draw Water from same.

3. In a paper machine, the combination with a vat having a false bottomand inlet port for introducing paper stock, of a r0tatable cylindermounted therein having a series of partitioned walls radiating from thecenter of the cylinder and running longitudinally of the cylinder, an,endless Wire mesh adapted to travel around said cylinder and suctionpipes with valve plates arranged to cover the ends of cylindercompartments, thereby completing suction chambers for drawing Water fromsaid compartments.

4. In cylinder paper machines, the combination with a rotating cylinderhaving a sheet forming screen for picking up the paper stock passingthereover and, longitudinally partitioned to form compartments, of asuction means consisting of suction pipes with valve platemouth piecesadapted to register with the open ends ofthecylinder compartments'toform a partial vacuum in suction chambers for from the paper stock.

HENRY J. MEADER.

drawing the Water

